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(No Model.) 2 Sheets-Sheet 1.

0. OANOIANI. EXTENSION TRUGK LADDER.

No. 474,628. Patented Ma 10, 1892.

2'Shee ts-Sheet 2.

E a d 0 M 0 W No. 474,628. Patented-May 10, 1892.

UNrTED STATES PATENT UEEICE.

CANOIANO OANCIANI, or UDINE, ITALY.

EXTENSION TRUCK-LADDER.

SPECIFICATION forming part of Letters Patent No. 474,628, dated May 10,1892. Application filed December 11 1891. fierial No. 414,665. (Nomodel.)

To all whom it may cancer-n:

Be it known that I, CANOIANO (JANOIANI, a subject of the King of Italy,residing at Udine, in the Kingdom of Italy, have invented certain newand useful Improvements in Extension-Ladders and Trucks; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

My invention relates to the class of fire-escape apparatus known asextension or shooting ladders.

In the drawings, Figure 1 is aside elevation of my invention telescopedand ready for transportation. Fig. 2 is a side elevation of the sameraised and extended. Fig. 3 is an enlarged cross-section of the ladders,showing the manner in which different sections slide one upon another.

I Like reference-letters refer to like parts in all the figures.

The carriage E is mounted on wheels A A, the latter of which areattached to a swiveled truck. The screws W W enable the operator toadjust the carriage in a horizontal position, no matter what may be theinequalities of the surface on which the wheels A A rest. On thecarriage is supported ,a series of telescoping ladder-sections G G G&c., which slide one upon the other by means of proper grooves (notshown) and the rollers R. The first ladder-section G is preferablyhinged to the carriage, so that it can be tilted at any angle to thehorizontal plane from zero, as shown in Fig. 1, to ninety degrees, asshown in Fig. 2. It might be possible to operate the ladder without suchhinge, having it permanently fixed at the most advantageous angle ofelevation; but the employment of the hinge renders the apparatus muchmore convenient to handle. In the construction illustrated the spindleof the Windlass Z acts as such hinge. The cable F has one end fastenedto the extension 6 on the carriage E, passes around a pulley (not shown)on the shaft U, journaled in the bracket g on the first ladder-sectionG, runs over the pulley p, and winds on the Windlass V, which is mountedon the carriage E. This Windlass V is operated by the gear N, meshingwith a pinion (not shown) on the shaft L. This in turn is driven by thegear Z, meshing with the pinion S, which is turned by the crank M. Ofcourse other kinds of winding-gear or screw-gear could be used to tilttheladderesectionswithout departing from the principle of my invention.

The shooting or extension gear consists, primarily, of the series ofchains 0 C C, &c. The chain 0 is fastened to the lower end of the secondsection G of the ladder at Q, as clearly shown in Fig. 2, runs over thepulley H, which is journaled at the upper end of the firstladder-section G, and winds on the barrel of the Windlass Z. A series ofsimilar chains'O (1 O 850., each have one end fastened to the lower endof a ladder-section, as at Q, pass over the pulley journaled at the endof the next lower section, as H, and have the other end fastened to. theupper portion of the second lower section, as G.

At the base of each ladder-section is a bracket I I 1 &c., on the upperside of said section. Each bracket has pulley-wheels c c jou rnaled atthe top and base thereof. If desirable, each bracket may be supported bya brace T. The chain 0 runs from the bracket I around the pulley P andWinds on the windlass Z, but in a direction opposite from that of thechain 0. A series of similar chains T T T 850., are each attached to abracket upon a particular section, as G and run over the pulleys on thebracket at the base of the next lower section, as G. Each chain has itsother end fastened to the upper part of the second lower ladder-section,as G.

The Windlass Z is driven by the gear D,

which meshes with the pinion d. This pinion cl is on the same shaft withgear K, which meshes with the pinion (not shown) on the shaft 1), whichis turned by the crank B.

The mode of operating my invention is the following: The apparatus isdragged to the fire by a team of horses or by other power. The carriageE is adjusted to a horizontal position by the screws W. The crank M isthen turned, winding up the cable F and tilting the ladder up into aposition as near to the perpendicular as may be desired. Simultaneouslyor subsequently the crank Bis rotated in such direction as to wind upthe chain 0 and unwind the chain 0. The efiect of this is, of course, toshoot out the second section G of the telescoping ladder. If thissection has been shot out a foot, it has obviousl caused a foot of thechain 0' to pass over th pulley H and has given the chain T a foot ofslack, so that the third section G2 must also have been moved over thefirst section G a distance of one foot. In the same way each sectionwill have been shot out over its next lower neighbor a foot. This may becontinued until the ladder is extended to its limit, as shown in Fig.v2. A reverse revolution of the windlass will shut the ladder up ortelescope it. The principal advantage of this construction is the actionof the brackets I I, &c., and the chains 0 T T, 850., to form acontinuous truss for the support of the ladders when extended. Otheradvantages arise from convenience of manipulation, rapidity of action,&c. Of course the extension and telescoping of the ladder could beaccomplished by running the chains T T &c., over the lower pulley ofeach .pair cc and dispensing with the brackets I l, &c.; but thevaluable feature of the truss-bracing would then be sacrificed.

Having therefore described my invention, what I claim as new, and desireto protect by Letters Patent, is

1. In a shooting-ladder, the combination of a carriage, a plurality oftelescoping laddersections mounted thereon, a pulleywheel jonrnaled onthe upper end of each section, a bracket mounted on the lower en d ofeach ladder-section and upon the upper side thereof, pulley-wheelsmounted on each of said brackets, a windlass upon the first section, achain which is fastened to the lower end of the second ladder-section,runs over the pulley journaled on the upper end of the first section,

and winds upon the Windlass, a second chain which runs from the upperend of the bracket on the second section of ladder, around the pulley onthe bracket at the base of the first section, and also winds onto theWindlass, but in the opposite direction from that of the firstmentionedchain, and means for winding up said Windlass, substantially asdescribed.

2. In a shooting-ladder, the combination of a carriage, a plurality oftelescoping laddersections mounted thereon, a pulley-wheel jonrnaled onthe upper end of each section, a bracket mounted on the lower end ofeach ladder-section and upon the upper side thereof, pulley-wheelsmounted on each of said brackets, a Windlass upon the firstladdersection, a chain which is fastened to the lower end of the secondladder-section, runs over the pulley jonrnaled on the upper end of thefirst section, and winds upon the Windlass, a second chain which runsfrom the upper end of the bracket on the second section of the ladder,around the pulley on the bracket at the base of the first section, andalso winds 011 the Windlass, but in the opposite direction from that ofthe first-mentioned chain, and means for winding up said Windlass, witha hinged connection between the carriage and the first ladder-section,and mechanism for tilting said first section at any angle to thehorizontal plane from zero to ninety degrees, substantially asdescribed.

3. In a shooting-ladder, the combination of a carriage, a plurality oftelescoping ladderseotions mounted thereon, a pulley-wheel jonrnaled onthe upper end of each section, a bracket mounted on the lower end ofeach ladder section and upon the upper side thereof, the braces whichsupport said brackets, pulley-wheels mounted at the top and base of eachbracket, a Windlass upon the first ladder-section, a chain which isfastened to the lower end of the second ladder-section, runs over thepulley jonrnaled on the upper end of the first section, and winds ontosaid windlass, a series of similar chains,each of which is fastened to aparticular ladder-section near its lower end, runs over the pulley atthe upper end of the next lower section, and is fastened to the upperend of the second lower section, a second chain which runs from theupper end of the bracket on the second section of the ladder, around thepulley on .the bracket at the base of the first section, and also windson the Windlass, but in a direction opposite from that of thefirst-mentioned chain, and a series of similar chains, each of which isfastened to the bracket on one ladder-section, runs around the pulleyson the bracket at the base of the next lower section, and is fastened tothe upper end of the'second lower ladder-section, all substantially asdescribed.

In testimony whereof I afiix my signature in presence of two witnesses.

OANOIANO CANCIAN I.

Witnesses:

OUDUTTI VrrToRIo, LONGO GIAvoNNL ICO

